Methods: to analyze and evaluate high risk factors for DVT in pregnancy.
方法：通过分析妊娠期女性并发血栓的高危因素评估患病风险。
Methods One hundred and fourty-one women with high hemorrhagic risk factors including twin pregnancy, polyhydramnios, fetal macrosomia, placenta previa were planned cesarean section.
方法对141例有出血高危因素（双胎、羊水过多、巨大儿、前置胎盘）的产妇行剖宫产术。
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